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Q11. CORRECT TEXT - (Topic 6)
With X11 forwarding in ssh, what environment variable is automatically set in the remote host shell that is not set when X11 forwarding is not enabled? (Specify only the environment variable without any additional commands or values.)
Answer: DISPLAY, $DISPLAY
Q12. - (Topic 4)
What is the purpose of the command mailq?
A. It fetches new emails from a remote server using POP3 or IMAP.
B. It is a multi-user mailing list manager.
C. It is a proprietary tool contained only in the qmail MTA.
D. It queries the mail queue of the local MTA.
E. It is a command-line based tool for reading and writing emails.
Answer: D
Q13. CORRECT TEXT - (Topic 6)
In an xinetd configuration file, which attribute specifies the network address that will be used to provide the service?
Answer: bind, interface
Q14. - (Topic 3)
Which character in the password field of /etc/passwd is used to indicate that the encrypted password is stored in /etc/shadow?
A. *
B. -
C. s
D. x
Answer: D
Q15. - (Topic 3)
What is true about the file /etc/localtime?
A. It is a plain text file containing a string such as Europe/Berlin.
B. It is created and maintained by the NTP service based on the geolocation of the system's IP address.
C. It is a symlink to /sys/device/clock/ltime and always contains the current local time.
D. It is either a symlink to or a copy of a timezone information file such as /usr/share/zoneinfo/Europe/Berlin.
Answer: D
Q16. - (Topic 4)
What is true regarding the file ~/.forward?
A. As it is owned by the MTA and not writable by the user, it must be edited using the editaliases command.
B. After editing ~/.forward the user must run newaliases to make the mail server aware of the changes.
C. Using ~/.forward, root may configure any email address whereas all other users may configure only their own addresses.
D. When configured correctly, ~/.forward can be used to forward each incoming mail to more than one other recipient.
Answer: D
Q17. - (Topic 3)
Which command can be used to delete a group from a Linux system?
A. groupdel
B. groupmod C. groups
D. groupedit
Answer: A
Q18. - (Topic 4)
Which of the following tasks can be accomplished using the command date? (Choose TWO correct answers.)
A. Synchronize the hardware and system clocks.
B. Output date and time in different formats.
C. Set the system clock.
D. Set the hardware clock.
E. Update the time via NTP.
Answer: B,C
Q19. - (Topic 4)
What is true about the ntpdate command?
A. It is the primary management command for the NTP time server.
B. It updates the local system's date (i.e. day, month and year) but not the time (i.e. hours, minutes,seconds).
C. It queries one or more NTP time servers and adjusts the system time accordingly.
D. It sends the local system time to one or many remote NTP time servers for redistribution.
E. It can be used by any user to set the user clock independently of the system clock.
Answer: C
Q20. CORRECT TEXT - (Topic 6)
On a Linux system with shadow passwords enabled, which file in the file system contains the password hashes of all local users? (Specify the full name of the file, including path.)
Answer: /etc/shadow